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Name: _______________________________________________ Period: ____________ Date: _____________ Cell Theory & Cell Basics 101 History & the Cell Theory 1. In 1655, Robert ____________ used a ___________ to examine a thin slice of ___________. Were these cells living? _____ What was their shape? ________ 2. Hooke was responsible for _________ them "cells" because they looked like the _________________________________________________________________. 3. In 1673, Anton von ________________ was the first to view living cells (organisms) in ____________ and scrapings from his _______________. 4. What did Mathias Schleiden conclude about plants in 1838? 5. What did Theodore Schwann conclude about animals in 1839? 6. a. What did Rudolph Virchow observe under the microscope in 1855? b. Virchow reasoned that all cells come from other _________ cells by cell division. 7. State the 3 parts of the cell theory. a. b. c. 8. To recap, the botanist _______________, the zoologist _______________, and the medical doctor ________________ all co-founded the cell theory. 9. What must be used to view most cells? 10. What is the difference between unicellular and multicellular organisms? 11. Cells in multicellular organisms are ___________. This means they take on different shapes and functions. 12. Give three types of specialized animal cells. 13. Give three types of specialized plant cells. Organization Levels of life 14. List the 3 nonliving levels of life in order from simplest to most complex. 15. At what level does life begin? 16. What are tissues? 17. What are organs? 18. What makes up an organ system? 19. Organ systems working together make up a ____________. Simple or Complex Cells 20. A prokaryotic cell lacks a __________ and membrane-bound __________________. Give two examples. 21. A eukaryotic cell HAS a __________ and membrane-bound ________________. Give four examples. 22. Which are more complex --- prokaryotic cells or eukaryotic cells? 23. Name the 3 basic parts of all eukaryotic cells. 24. Two main types of eukaryotic cells are ____________ cells and ___________ cells. 2